phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('d1f1e5fd8f4c41aa12244cda5d1ca2ef', -1, 1752652613, 1752652613, 'd849d890', -2, 0, 0)

Line : 189
File : sessions.php